Abstract
Bismuth strontium manganites (BSM) with variation in strontium content have been synthesized by simple solid state reaction method. X-ray diffraction data show that the samples have orthorhombic structure with crystallite size ∼40 to 60 nm. SEM studies reveal morphology of micro-rods and micro-flakes. The dielectric constant (ɛ′) and the dielectric loss (tan δ) decreases with the strontium content and the applied frequency which has been attributed to Maxwell-Wagner polarization. The microwave conductivity of samples decreases from 8.9 S/cm to 2.29 S/cm at 8.2 GHz as strontium increases. The penetration depth has also been reported at microwave frequencies from 8–18 GHz.
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Mathad, S.N., Jadhav, R.N., Pawar, R.P. et al. Dielectric spectroscopy and microwave conductivity of bismuth strontium manganites at high frequencies. Electron. Mater. Lett. 9, 87–93 (2013). https://doi.org/10.1007/s13391-012-2109-8
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DOI: https://doi.org/10.1007/s13391-012-2109-8